Mazda CX-9 Grand Touring 2009 Manual page 1162

2008 ENGINE PERFORMANCE On-Board Diagnostic (MZI-3.7) - Mazda CX-9
DTC P0645 (MZI-3.7) DIAGNOSTIC PROCEDURE
STEP INSPECTION
VERIFY FREEZE FRAME DATA HAS
BEEN RECORDED
1
Has FREEZE FRAME DATA been
recorded?
VERIFY RELATED REPAIR
INFORMATION AVAILABILITY
Verify related Service Bulletins
2
and/or on-line repair information
availability.
Is any related Service Bulletins
available?
INSPECT THAT THE ACCS PID IS
OFF
Turn ignition key to ON (Engine
running).
3
A/C switch and defroster switch off.
Access the ACCS PID uesing M-
MDS.
Is the PID state off?
INSPECT A/C RELAY CONNECTOR
FOR POOR CONNECTOR
Turn the ignition switch off.
Disconnect the A/C relay connector.
4
Inspect for poor connection (such as
damaged, pulled-out pins, corrosion,
etc.).
Are there any malfunction?
INSPECT A/C RELAY POWER
SUPPLY CIRCUIT FOR OPEN
CIRCUIT
Turn the ignition switch to the ON
5
position (Engine off).
Measure voltage between A/C relay
terminal A (wiring harness-side) and
body ground.
Is voltage B+?
INSPECT A/C RELAY CONTROL
2008 Mazda CX-9 Grand Touring
Yes Go to the next step.
Record FREEZE FRAME DATA on the repair
No
Perform repair or diagnosis according to the
available Service Bulletins.
Yes
No
Yes Go to the next step.
ACCS input to PCM is requesting A/C. Inspect
A/C system operation, then go to Step 12.
No (See DIAGNOSTIC TROUBLE CODE
(See TROUBLESHOOTING INDEX .)
Repair or replace suspected part, then go to Step
Yes
12.
No
Yes Go to the next step.
Repair or replace suspected part, then go to Step
No
ACTION
order, then go to the next step.
If the vehicle is not repaired, go to the next
step.
Go to the next step.
NUMBER INSPECTION .)
Go to the next step.
12.